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### Pre-processing a workspace

#### Purpose

During the pre-processing phase, the workspace is supplemented with various types of GIS features that are needed for the calculation of the network design. Unlike the Populate phase, where GIS data is retrieved directly from the Network Manager Telecom database, during this phase Comsof Fiber commands are used to generate GIS features or modify existing GIS features.

The features that are typically generated at this stage are:

- Trenches - Possible trenches calculated from the street center lines.

- Drop Trenches - Trenches that run from a drop point to a demand point and ensure the connection of the demand point to the network.

- Transitions - Places between two segments of the network where the infrastructure used changes and thus additional facilities are needed.

- Street crossings - Places where the network switches from one side of a street to the other and additional facilities are needed.

#### Available Comsof Fiber commands

Which commands you can run during the Pre-process phase is defined in the mapping that you selected via the Populate From option when creating the workspace.

The mapping itself, including the Comsof Fiber commands, is configured via the Advanced tab sheet on the Settings page of the Network Manager Telecom Configuration module. See the topic Configuring your export mappings in the Comsof Fiber Integration Installation and Configuration Guide.

#### Comsof Cloud operation

The calculations for the pre-processing operation are performed on the Comsof Cloud server. For this purpose, the entire workspace directory is zipped and uploaded to the Comsof Cloud server. When the calculations are complete, the resulting workspace, in turn, is zipped and downloaded onto the Network Manager Telecom server where it replaces the existing workspace directory.

#### Executing the operation

To pre-process the workspace:

1. Select the workspace via the Search bar or by clicking its polygon on the map.

   The Workspace panel opens in the Details tab sheet.

2. Click Open at the bottom of the panel.

   The Workspace dialog opens.

3. Tick the Pre-process check box.

4. Select which commands you wish to have executed.

   1. Click the arrow at the right of the Pre-process section.

      The list of available Comsof Fiber commands appears. By default all commands are selected.

   2. Deselect the command(s) that you do not wish to execute.

5. Click Run at the bottom of the dialog.

   The operation is submitted for execution on the Comsof Cloud server (see above).

   If the operation successfully completed:

   - The progress bar turns green with a little check mark on the right of it.

   - The Last operation label at the top of the dialog displays "`preprocess`".

   - A green check mark also appears next to the name of the operation along with a hyperlink to the Log data.

   - The Validate check box is automatically ticked.

   - On the map the Comsof Fiber features are displayed.

#### Visualization of the features on the map

Once the Pre-process operation has completed successfully, the newly generated features become visible on the map.

To have the different categories of feature displayed on the screen, you must make sure that the Workspace IN and its sub-categories have been added to the Layers tab sheet and the appropriate check boxes have been ticked.

The features that have been added become visible in the selected workspace.

Figure: Comsof Fiber features on map after Pre-process operation